Soluble solid content nondestructive testing method, system and device

The invention discloses a nondestructive testing method, system and device for soluble solid content. The method comprises the following steps: building an imaging platform and constructing a linear regression model of three-dimensional coordinate-whiteboard reflectivity; calibrating and registering a hyperspectral imager and a structured light camera in the imaging platform; obtaining a grape bunch image based on the registered platform, and performing black and white correction in combination with a linear regression model of three-dimensional coordinate-whiteboard reflectivity; and inputting the corrected grape bunch hyperspectral image into a pre-constructed soluble solid content prediction model to obtain a prediction value. The system comprises a reflectivity model building module, a registration module, a correction module and an output module. The device comprises a memory and a processor used for executing the nondestructive detection method for the content of the soluble solids. By using the method,